ASTROSAT CZTI

Data Quality Report

Orbit 53152

Creation date: 2025-07-28T14:25:53.739944
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A13_003T01_9000006486_53152cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_53152cztM0_level2_quad_clean.evt
Size (bytes)539,064,00076,999,680
Size514.1 MB 73.4 MB
Events in quadrant A3,103,728541,591
Events in quadrant B3,227,681564,390
Events in quadrant C9,727,212322,444
Events in quadrant D3,444,514497,480

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137231
B0141891
C0328865
D0144811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58011843.171867%
B58023506.032403%
C5801255644.061369%
D5801941.620410%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 6885 5800 162 162 2.35% 2.79%
B 6887 5802 168 168 2.44% 2.90%
C 6885 5800 2636 2636 38.29% 45.45%
D 6886 5802 87 87 1.26% 1.50%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 282767 1920.55 587 572 146.9
A 12 115 250088 1698.14 587 572 146.9
A 0 8 54149 364.63 587 572 146.9
B 2 249 544788 4446.42 574 553 122.4
B 1 255 220144 1794.07 574 553 122.4
B 4 81 58344 472.16 574 553 122.4
C 1 241 3089329 24462.44 455 451 126.3
C 0 240 2736379 21667.24 455 451 126.3
C 15 224 1141082 9033.25 455 451 126.3
D 13 170 198755 1221.58 568 542 162.3
D 15 125 171579 1054.09 568 542 162.3
D 8 176 160935 988.5 568 542 162.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter